diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index d061c8677a81..169836020208 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -36,6 +36,10 @@ static struct kset *iommu_group_kset; static struct ida iommu_group_ida; static struct mutex iommu_group_mutex; +struct iommu_callback_data { + const struct iommu_ops *ops; +}; + struct iommu_group { struct kobject kobj; struct kobject *devices_kobj; @@ -698,7 +702,8 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) static int add_iommu_group(struct device *dev, void *data) { - struct iommu_ops *ops = data; + struct iommu_callback_data *cb = data; + const struct iommu_ops *ops = cb->ops; if (!ops->add_device) return -ENODEV; @@ -714,7 +719,7 @@ static int iommu_bus_notifier(struct notifier_block *nb, unsigned long action, void *data) { struct device *dev = data; - struct iommu_ops *ops = dev->bus->iommu_ops; + const struct iommu_ops *ops = dev->bus->iommu_ops; struct iommu_group *group; unsigned long group_action = 0; @@ -767,10 +772,14 @@ static struct notifier_block iommu_bus_nb = { .notifier_call = iommu_bus_notifier, }; -static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops) +static void iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops) { + struct iommu_callback_data cb = { + .ops = ops, + }; + bus_register_notifier(bus, &iommu_bus_nb); - bus_for_each_dev(bus, NULL, ops, add_iommu_group); + bus_for_each_dev(bus, NULL, &cb, add_iommu_group); } /** @@ -786,7 +795,7 @@ static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops) * is set up. With this function the iommu-driver can set the iommu-ops * afterwards. */ -int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops) +int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops) { if (bus->iommu_ops != NULL) return -EBUSY; |